The commission had last year directed the universities to maintain data of PhD students in a prescribed proforma and upload them on their websites.
But a few universities conducted the exercise.
The UGC has again sent a communication to varsities to complete the task within two months.
"The Commission has decided to request all the universities to upload data regarding PhD on their websites on the parameters mentioned in the proforma within two months and send a link to us," the letter said.
The details sought in the proforma prescribed by the UGC include name of the supervisor, Aadhaar number of the student, mode of PhD, research topic, likely date of completion, and details of fellowship availed, if any.